HDFC Bank — credit card blocked

Address:

Kendujhar, Odisha, 758034

Dear sir/madam,
I am saubhagyaranjan panda your existing customer, my cc ending number 3969. Last 3-4 months i couldn't know my outstanding thats why i had unble to payment. I had go to bank & contact to customer care but both were unble to give my outstanding credit. Now my credit card blocked. Kindly help me how to do this time. Now civil complain agianst me.